| Titre : |
A conformational study of collagen as affected by tanning procedures |
| Type de document : |
texte imprimé |
| Auteurs : |
Eleanor M. Brown, Auteur ; Robert L. Ducley, Auteur ; Alicia R. Elsetinow, Auteur |
| Année de publication : |
1997 |
| Article en page(s) : |
P. 225-233 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Chrome tanning of animal skins to produce high quality leather is a well estabished industrial process. The multistep process whereby complex salts of trivalent chromium (Cr(III)) crosslink collagen fibrils is more an art form than a science. One of the first steps in this process is the interaction of chromium with collagen and this reaction is poorly understood. Our goal is to develop a scientific basis for improving the effectiveness and efficiency of tanning technology. In the present study, we use spectroscopic methods circular dichroism (CD) and 13-carbon nuclear magnetic resonance(13C NMR) and transmission electron microscopy(TEM) to characterize the effects of various steps in the chrome tanning process on the conformation of soluble collagen. Partial denaturation of collagen prior to chromium binding appears to be nacessary. The ratio of the 13C NMR peaks due to free carboxyl groups of aspartic and glutamic acids was altered when chromium was bound to the collagen. A network of soluble crosslinked collagen could be seen in transmission electron micrographs of chromium-collagen complexes. |
| En ligne : |
https://drive.google.com/file/d/19xxsgj0iOLgzJHTyvAMOweV9uRH0icSQ/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7572 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCII, N° 9 (11/1997) . - P. 225-233
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